drm/i915: More renaming of rings to engines

This time using only sed and a few by hand.

v2: Rename also intel_ring_id and intel_ring_initialized.
v3: Fixed typo in intel_ring_initialized.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1458126040-33105-1-git-send-email-tvrtko.ursulin@linux.intel.com
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index c0545db..dac01ee 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -1369,7 +1369,7 @@
 
 #define I915_USER_RINGS (4)
 
-static const enum intel_ring_id user_ring_map[I915_USER_RINGS + 1] = {
+static const enum intel_engine_id user_ring_map[I915_USER_RINGS + 1] = {
 	[I915_EXEC_DEFAULT]	= RCS,
 	[I915_EXEC_RENDER]	= RCS,
 	[I915_EXEC_BLT]		= BCS,
@@ -1417,7 +1417,7 @@
 		*ring = &dev_priv->engine[user_ring_map[user_ring_id]];
 	}
 
-	if (!intel_ring_initialized(*ring)) {
+	if (!intel_engine_initialized(*ring)) {
 		DRM_DEBUG("execbuf with invalid ring: %u\n", user_ring_id);
 		return -EINVAL;
 	}